Ophthalmic mounting



Oct. 14, 1930. j TWQMBLY 1,778,436

OPHTHALMI C MOUNTING Filed Feb. 27, 1928 I N V EN TOR.

/FJWM A TTORNEYS.

Patented Oct. 14, 1930 V UNITED STATES PATENT OFFICE JOHN I. TWOMBLY, FPROVIDENCE, RHODE ISLAND, ASSIGNORTO UNIVERSAL OPTI- CAL CORPORATION, OFPROVIDENCE, RHODE ISLAND, A CORPORATION OF RHODE ISLAND OPHTHALMICMOUNTING Application filed February 27, 1928. Serial No. 257,154.

This invention relates to an improved construction of ophthalmicmounting; and has for its object to provide in such a mounting a bridgemember of substantially U-shape,

comprising a cross-bar having side arms extending substantially parallelwith and preferably spaced from the adjacent portion of the eyewires ofthe mounting. Each of the side arms of this member has bosses thru whichit is secured to the eyewire.

A further object of the invention is that each of the side arms of thebridge member extends down below the medial line thru the lenses oreyewires and that the nose-guard member is connected to the lowerportion of these side arms.

The invention further consists in the provision of a plurality of spacedbosses on each of the side arms thru which these arms are attached tothe eyewires.

With these and other objects in View, the invention consists of certainnovel features of construction, as will be more fully described, andparticularly pointed out in the appended claims.

In the accompanying drawings:

Fig. 1 is a front view of my ophthalmic mounting in which the eyewiresare connected by my improved form of bridge member.

Fig. 2 is an edge View of the mounting illustrated in Fig. 1.

Fig. 3 is a perspective view of the bridge member detached and showing anose guard connected to the lower ends of its side arms.

Fig. 4 is a perspective view of one of the nose guards.

Fig. 5 is a side elevation showing a fragmental portion of the bridgemember detachedfrom the wire, and the eyewire notched on its peripheryto receive the boss on the arm of the bridge member.

Fig. 6 shows a fragmental portion of an eyewire in section.

Fig. 7 illustrates the arms of the bridge member as each being providedwith attaching bosses spaced apart and both being above the medial linethru the center of the eyewires.

Fig. 8 shows one of the attaching bosses as being connected to theeyewires at a point be low the medial line thruthe eyewires.

Fig. 9 shows the arms ofthe bridge member each of which is connected tothe eyewire at its upper and lower ends.

Fig. 10 shows another modification in which the side arms of the bridgemember are connected each thru three spaced bosses to the edge of theeyewire. It is found in practice of advantage particularly in theconstruction of'ophthalmic mountings formed of precious metal to providea connecting bridge member in substantially U-shape with its side armsextend ing substantially parallel with the adjacent portions of theeyewires and spaced therefrom with the lower end of these arms eX-tending to or below the medial line thru eyewires and to provide a bosson each of these arms arranged to be connected to the eyewires at apoint'preferably above the medial line thru the eyewires and to attachanose guard to the lower portion of these side arms each preferably at apoint substantially on the medial line'thru these eyewires; and thefollowing is a detailed description of the present embodiment of myinvention and showing the preferred form and several modifications inconstruction by which these advantageous results may be obtained:

With reference to the drawings, 10 designates the eyewires which arepreferably formed of metal, the same being herein shown as being notchedas at 11 on their inner edges. These eyewires are connected by a bridgemember 12 which is preferably formed substantially in U-shape with acrossbar'13 and two side arms 14; These side arms are .perferablyarranged with their outer edges extending substantially parallel to theadjacent portion 15 of the eyewires and the lower ends 16 of these armsextending preferably to a point slightly below the medial line thru theeyewires and lenses 17. r In attaching these side arms to the eyewires,I preferably provide a boss 18 on each of the arms and integraltherewith as shown in the drawing or which are attached by soldering orotherwise to the eyewires to connect these wires together at a pointslightly above the medial line thru the eyewires.

A nose guard 19 is provided with a bendable arm 20 which I preferablyconnect to the lower portion of each of the side arms, whichfacilitate-the, construction of the device as these nose guards may beconnected to the bridge before the bridge is connected to the eyewires.

' 3Q I do notwish to be restricted to the attach ing of thebridgemember'to the-eyewires at a point above and adjacent the medial line.

second boss 21, as illustrated in Fig. 7 nearer I,

attaching the bridge to the eyewires, while in the medial line andinstill other cases I may providebosses whichwwill be employed for go,connecting these bosses to. the eyewires both above and below the medialline, as best illustrated in Fig, '10., V i v Inrsome instances, it isfound of advantage to notch the edge of the eyewires as at 23, toreceive the boss 18 therein and so facilitate the locating of the bridgemember on the eyewires. I I

- My improved form of bridge memberis extremely simple and practical.inits construction, it facilitates the connecting of the 1 bridgemember-to the eyewires and forms a very strong and durableconnectionbetween the bridge member and the eyewires The, foregoingdescription is directed sole- 86 ly towards the constructionillustrated, but I desire it to be understood that I reserve theprivilege of resorting to allthe mechanical changesto which the deviceis susceptible, the invention being defined and limited only b 40 theterms of the appended claims.

Iclaim: f 1. In anophthalmic mounting, a pair of spaced eyewires, asubstantially U-shaped connecting bridge membervhaving side arms 4extending substantially parallel with the adjacent portions of theeyewires in the plane of the eyewires but spaced therefrom, each armhaving a pair of bossesin the saidiplane attached to the eyewires atpoints above and below the medial line through the eyewires, the armshaving a portion extending below the medial line. g I I 2. In anophthalmic mounting, a pair of spaced metal eyewires, a substantially U-shaped connecting brid' e member having side arms extending sustantially parallel with the adjacentfportion of the eyewires in theplane of the eyewires and spaced there from and extending to a pointbelow the 50 medial line therethrough, a plurality of I spaced bosses inthe said plane extending from each of said side arms and attaching isaid side arms at intervals to the eyewires."

In testimony whereof I' afiix my signature.

'JOI-IN-IL'IWOMBLY; I

only as in some instances I may' providea r 15 the upper portion of thebridge to' assist in it 7 other cases Irmay'proVidea boss '22 below v i

